<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>
	<meta charset="UTF-8">
	<title>购物车</title>
	<%--静态包含 base标签，css样式，jQuery--%>
	<%@ include file="/pages/common/head.jsp" %>
	<script type="text/javaScript">
		$(function(){
			//给【删除】绑定单击事件
			$(".deleteItem").click(function(){
				var itemName = $(this).parent().parent().find("td:first").text();
				return confirm("你确定要删除【"+itemName+"】吗？");
			});
			//给清空购物车绑定点击事件
			$("#clearCart").click(function(){
				return confirm("你确定要清空购物车吗");
			});
			//给输入框绑定onchange内容发生改变事件
			$(".updateCount").change(function(){
				//获取商品名称
				var name = $(this).parent().parent().find("td:first").text();
				//获取商品数量
				var count = $(this).val();
				var id = $(this).attr("bookId");
				if(confirm("你确定要将【"+name+"】商品修改数量为："+count+"吗")){
					//发起请求，给服务器保存修改
					location.href = "cartServlet?action=updateCount&count="+count+"&id="+id;
				}else{
					//defaultValue属性是表单项Dom对象的属性，它表示默认的值
					this.value = this.defaultValue;
				}
			});
		});
	</script>
</head>
<body>
	
	<div id="header">
		<img class="logo_img" alt="" src="static/img/logo.gif" >
		<span class="wel_word">购物车</span>
		<div>
			<%@ include file="/pages/common/login_success_menu.jsp"%>
		</div>
	</div>
	
	<div id="main">
	
		<table>
			<tr>
				<td>商品名称</td>
				<td>数量</td>
				<td>单价</td>
				<td>金额</td>
				<td>操作</td>
			</tr>
			<c:if test="${empty sessionScope.cart.items}">
				<%--如果购物车为空的情况--%>
				<tr>
					<td colspan="5"><a href="index.jsp">亲，您的购物车为空</a></td>
				</tr>
			</c:if>
			<c:if test="${not empty sessionScope.cart.items}">
				<%--如果购物车非空的情况--%>
				<c:forEach items="${sessionScope.cart.items}" var="entry">
					<tr>
						<td>${entry.value.name}</td>
						<td><input class="updateCount" type="text" bookId="${entry.value.id}"
								   value="${entry.value.count}" style="width:50px"/></td>
						<td>${entry.value.price}</td>
						<td>${entry.value.totalPrice}</td>
						<td><a class="deleteItem" href="cartServlet?action=deleteItem&id=${entry.value.id}">删除</a></td>
					</tr>
				</c:forEach>
			</c:if>
		</table>

		<%--如果购物车非空才输出页面的内容--%>
		<c:if test="${not empty sessionScope.cart.items}">
			<div class="cart_info">
				<span class="cart_span">购物车中共有<span class="b_count">${sessionScope.cart.totalCount}</span>件商品</span>
				<span class="cart_span">总金额<span class="b_price">${sessionScope.cart.totalPrice}</span>元</span>
				<span class="cart_span"><a id="clearCart" href="cartServlet?action=clear">清空购物车</a></span>
				<span class="cart_span"><a href="orderServlet?action=createOrder">去结账</a></span>
			</div>
		</c:if>
	</div>

	<%--静态包含页脚内容--%>
	<%@ include file="/pages/common/footer.jsp" %>
</body>
</html>